/Engine/Source/Runtime/Engine/Classes/Kismet/KismetMathLibrary.h
Returns min of all array entries and the index at which it was found. Returns value of 0 and index of -1 if the supplied array is empty.
static void MinOfIntArray ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & IntArray, int32 & IndexOfMinValue, int32 & MinValue )